CVE-2015-8660

Estado: ModificadaMedia (6.7)—Exploit

Gravedad6.7Media · CVSS 3.1

Probabilidad de explotación22 %mayor que el 98 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoDisponiblePublicado en Exploit-DB · Prueba de concepto en GitHub (no verificada) · Módulo de Metasploit (exploit fiable y al alcance de cualquiera)

La función ovl_setattr en fs/overlayfs/inode.c en el kernel de Linux hasta la versión 4.3.3 trata de fusionar distintas operaciones setattr, lo que permite a usuarios locales eludir las restricciones destinadas al acceso y modificar los atributos de archivos overlay arbitrarios a través de una aplicación manipulada.

CVSS

Puntuación base: 6.7
Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 22 %
Percentil entre todas las CVEs puntuadas: 98
Fecha de la puntuación: 20/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Módulo de Metasploit (exploit fiable y al alcance de cualquiera) · Overlayfs Privilege Escalation
Publicado en Exploit-DB · Linux Kernel (Ubuntu / Fedora / RedHat) - 'Overlayfs' Local Privilege Escalation (Metasploit) (2/11/2016)
Publicado en Exploit-DB · Linux Kernel 4.3.3 - 'overlayfs' Local Privilege Escalation (2) (12/1/2016)
Publicado en Exploit-DB · Linux Kernel 4.3.3 (Ubuntu 14.04/15.10) - 'overlayfs' Local Privilege Escalation (1) (5/1/2016)
Prueba de concepto en GitHub (no verificada) · Lista de pruebas de concepto en GitHub

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-264

Referencias

Mostrar las 46 referencias

JSON original (NVD)

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      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
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  "descriptions": [
    {
      "lang": "en",
      "value": "The ovl_setattr function in fs/overlayfs/inode.c in the Linux kernel through 4.3.3 attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application."
    },
    {
      "lang": "es",
      "value": "La función ovl_setattr en fs/overlayfs/inode.c en el kernel de Linux hasta la versión 4.3.3 trata de fusionar distintas operaciones setattr, lo que permite a usuarios locales eludir las restricciones destinadas al acceso y modificar los atributos de archivos overlay arbitrarios a través de una aplicación manipulada."
    }
  ],
  "lastModified": "2026-06-17T00:34:59.407",
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    {
      "nodes": [
        {
          "negate": false,
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